Car-door.



S. W. MURRAY. GAR DOOR.

APPLICATION FILED JAN. 20, 1908. 967.81 4:.

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Patented Aug. 16, 1910.

S. W. MURRAY.

Patented Aug. 16,1910.

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GAR DOOR. APPIiIOATION FILED 3111.20, 1908.

Patented Aug. 16, 1910.

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S. W. MURRAY.

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Patented Aug. 16,1910.

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SAMUEL W. MURRAY, OF MILTON, PENNSYLVANIA.

GAR-DOOR.

Specification of Letters Patent.

Patented Aug. 16, 1910.

Application filed January 20, 1908. Serial No. 411,749.

To all whom it may concern:

Be it known that I, SAMUEL WV. MURRAY,

a citizen of the United States, residing at Milton, in the county of Northumberland and State of Pennsylvania, have invented certain new and useful Improvements in Car-Doors, of which the following is a specification.

My invention relates to an improvement in car doors.

The object of this invention is to provide a car door which may be easily and quickl opened or closed and which may be as read ily locked against surreptitious meddling or opening.

A further object is to provide means for fastening the door at the bottom as well as at the top so that-the freight contained in the car working down against it will not force the door open, and further to provide a car door of such construction that the initial opening is an outward movement instead of sliding, as is common with most freight car doors now in use, thus obviating not impossible by heavy freight crowding against the door.

With these several objects in View, my invention consists in certain novel features of construction and combinations of parts which will be hereinafter described and pointed out in the claims.

In the accompanying drawings :Figure 1 is a view in side elevation showing a por tion of a freight car with my improved door applied thereto. Figs. 2 and 3 are enlarged details in transverse section through the upper portion of the car and door showing means I have devised for throwing the upper end of the door in and out, one view showing the door closed, and the other open. Figs. 4 and 5 are corresponding views through the lower portion of the car and door. Fig. 6 is an enlarged detail view in front elevation showing the operating lever. Fig. 7 is a view in section through the box in which the operating lever is located and showing the operating lever and pawl for locking it in side elevation. Fig. 8 is a horizontal sectional view on the line 8, 8, of Fig. 7 Fig. 9 is a detail view in front elevation of one of the levers for raising and lowering the door. Figs. 10 and 11 are side and front elevations respectively of the hanger plates. Fig. 12 is an enlarged hori zontal section through the door and door posts. Fig. 13. is a view in front elevation to show the wear-plate on the lower edge of the door. Fig. 14 is an enlarged sectional View through the sill of the car and through the lower end of the door showing the means for looking or fastening the lower end of the door. Fig. 15 is a plan view of the wear plate showing a fragment of the fastening bolt; and Fig. 16 is a front elevation of the cam washer.

The car shown in Fig. 1 is represented by the numeral 1, and the door is preferably made in two sections, 2, 2, although it might, of course, be made in one. When made in two sections, as illustrated, each door is preferably provided with two rollers, 3, 3, and these rollers are carried on bearings 4, 4, extending upwardly from the arms 5, 5, which latter are securely bolted to the doors. These rollers 3, 3, comprise a hub and large and small cone-shaped flanges 6 and 7 respectively, formed integral with the hub, their point of intersection constituting the bearing point of the rollers upon the track 8. The purpose of the larger coneshaped flange 6 is to afford means overreaching the track at all times, whereby to carry the upper end of the car door outward or away from the car, which is accomplished by the cam action. of the cone-shaped flange (3 upon the track the moment the car door is lowered. The upper end of the car door is beveled and faced with a bearing plate 10 as shown, and this is in position to engage the overhanging angle-iron 11 against which the upper end of the door strikes when raised whereby it is forced inwardly against the plate of the car frame. The door is raised and lowered by means of a rock bar 12 which, in its present form, is square in cross-section, although it may be of various forms. The arms 13, 13, are mounted to slide upon this rock bar, and are adapted to turn with it. The outer ends of these arms are hinged to the plates 14, 14, secured to the lower edges of the car door or doors.

The rock bar 12 is supported in a recess 16 formed therefor in the sill 17 just above the plate 18 where it is out of the way, and forms no obstruction, and is not liable to be struck or damaged. It is supported in any approved manner, as for instance, by hanger plates 15, 15, secured to the side of the car.

The rock bar may be turned in any approved manner and as a-convenient means for accomplishing it, I have provided a lever mechanism shown in detail in Figs. 6 and 7. This lever is preferably made in two sections 19 and 20, pivoted together as at 21,

preferably it is jointed and made in two sections as described, the lower section having a socket 24 secured thereon in which the upper section 20 has more or less freedom of movement, the purpose being to provide an adjustment-for the upper end of the lever to compensate for any irregularities of the formation of the various parts of which my invention is composed, and the adjustment may be accomplished very simply by means of the wedges 25, 25, secured in the socket against the opposite edges of the upper section or handle portion 20 of the lever. A pawl or dog 26 pivoted to the side of the housing as at 27 is in position to be brushed aside as the lever is raised, and to drop by gravity against the shoulder 28 on the handle end of the lever whereby to lock the latter in its raised position when the lever is swung upwardly into the housing, and the doors are chocked up against the car siding and locked.

It is sometimes desirable to provide an extra fastening for the lower ends of the door or doors, which exigency I provide for When adjusted this bolt is locked by means of a hand lever 36 mounted on the inner end of the bolt 31 and provided with a cam rosette 37 which engages the cams 38, 38, on the washer 39 secured on the inner face of the car sill 17 As previously suggested, this securing means may be used or not, as desired, and when used, is very simple, and easily manipulated. Many times it would be absolutely unnecessary to use it, but there are conceivable occasions when it might be very desirable.

In operation, it may be assumed the door or doors are closed as shown in Figs. 1, 2, 4: and 12. The seal (not shown) is first cut or broken, and the operator raises the dog 26 by pressing down on the finger piece 40, whereupon the dog is lifted. With his other roller 3 by descending upon the track 8 has the effect of moving the upper end of the door or doors outwardly away from the car,

and as the lower end is positively moved therefrom the door is bodily lowered and swung away from the car at the lower end by a lever mechanism, while being guided downwardly and outwardly at the upper end I by means of the flanged rollers 3, 3. After being thus released and thrown outwardly and downwardly the weight of the doors is sustained upon the track and the door or doors are opened by simply sliding them along the track, all of which operation of the car door or doors is rendered very simple and easy by the use of this mechanism. To close the doors, the reverse takes place; that is to say, they are slid together, and the lever is raised, thereby throwing and forcing the doors inwardly, they bein positively swung upwardly and inwar 1y at their lower ends, and by striking the angleiron 11 at the upper end being crowded inwardly at the point, and the lever is locked automatically by the dog or pawl 26 dropping against the shoulder 28, after which the pawl or dog may be sealed as explained. The sections of the lever merely require one adjustment which is merely to regulate the relative position of the parts.

More or less slight changes might be resorted to in the form and arrangement of the several parts described without departing from the spirit and scope of my invention and hence I do not wish to limit myself to the exact construction herein set forth, but

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. The combination with a car door, rollers, and track, of means for vertically raising and lowering the door and rollers, said rollers formed with the flange normally overreaching said track, said flange engag- 115 ing said track when the door is lowered and moving said door outwardly from the car.

2. The combination with a car door and track, of a rock bar having slidable arms thereon hinged to the door, and a roller carried by the door, said roller formed with a cone flange normally overreaching said track, saidfiange engaging said track when the door is lowered and guiding said rollers to said track thus moving said door laterall 125 3. The combination with a car, door, tracllt, and a roller carried by the door, said roller having a cone shaped flange overhanging the track, of a rock bar connected with the door for raising and lowering the latter and moving it inwardly and outwardly with respect to the car, a lever for rocking the rock bar, and means for automatically locking the lever when the latter is in a pre-determined position.

4. The combination with a car, door, track and a roller carried by the door, said roller having a cone shaped flange overhangin' the track, of a rock bar connected with the I door for raising and lowering the latter and moving it inwardly and outwardly with respect to the car, a lever for rocking the rock bar, and means for automatically look ing the lever When the latter is in a predetermined position, said lever made in two sections, and means for adjusting the sections with respect to each other.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL W. MURRAY.

l/Vitnesses:

J. W. BEUSOOTER, EDWIN PAUL. 

